Sliding door roller repair

A handy person from Big Sur, California says:
This is a photo of the roller I modified in order to keep it moving.
I can't find any identifying marks on the roller, or the door, which is custom built 8 1/2 feet tall by 4 1/2 feet wide.
It was installed 35 years ago and we cannot find anyone from the original builder to help.
I didn't measure the roller before I put it back together but it is about 2 1/2 inches long.
Thumbnail of the uploaded file named Allans door roller.JPG
Thumbnail of the uploaded file named Allans door roller (2).JPG
Profile picture of Dave Sr.
Dave Sr. from SWISCO responded:

Thanks for posting! Give our 81-082 roller assembly a look. This could be the roller you are looking for. See if the dimensions match up to your roller.

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